Reservoir fountain brush



4 NINJA. Y

Viiv/A @l M. w. MAGANN Er'AL oct. 24, 195o FIG .i

atenteci ct. 24, 195,0

UNITED YSTATES PATENT -OFFIC I RESERVOIR FOUNTAIN BRUSH Merritt W. Magann, St. Louis, and William A.'

McElvain, Maplewood, Mo., assilgfnors .to Diagraph-Bradley Stencil Machine Corporation, St.V Louis, Mo., a corporation of Missouri Y Application November 27, 1946, SerialNo. 712,510

(Cl. .l-413.8.)

.2 Claims.

with regard to certain more specificv features, to yalved feedstencil brushes.

This application .is a division of our copending application for Fountain Brush, Serial No. 567,922, filed .December 13, 1944, A.el/entuated as Patent 2,417,370, March 11, 1947.

Among the several Aobjectsof the invention may be noted the provision of a fountain stencil brush -in :which a valve. for controlling ink feed is freely operable from the .outside and the arrangement is such as positively to `prevent leakage ofl ink; the provision .of a .brush of the classdescribed which has an improved operating touch; and the provision- `of 1a Valved brush of this class which is simple in construction and reliable in operation. Other objects will be in part apparent and in part pointed out hereinafter.

The invention accordingly comprises the elements and combinations of elements, features of construction, and arrangements of parts which will -be 4exennoliiied in the structures hereinafterdescribed, and the scope of the application of which will vbe.j ngjlicated,in the following claims.

In the accompanying drawings, in. which one of various possible embodiments of the invention is illustrated.

Ailig. 1 is a transverse vertical section through the fountain brush vof this invention; and.,

jFig. `2 isV afragmentary detailed sectionV taken on1inez+2ofnigi o .f Similar Areference characters indicate corresponding 'parts' throughout t ,LSeveral views .of the drawings. 'Y

Referring to Athe drawings,reference character 1| indicates the main. body of the fountain brush of this invention. `Body .1l lis proyided at its normally lower end with a threaded counterbore 3 for the removable reception of the threaded ferrule 5 of a standard brushy assembly 1. Between the brush assembly 1 (including its ferrule 5) and the top of the counterbore is a packing gasket 9. The body 1I is also provided with an upper threaded counterbore I3. The lower end of an elongate ink reservoir cylinder 4I is threaded into the counterbore I3 and seats against a packing gasket at the lower end of the counterbore. The upper end of this cylinder is closed by a cap 59. The reservoir 4I forms a handle at the other end of body 1I from the brush. Body 1I is provided with a lateral passage 13 closed at one end by a threaded plug which backs a spring 11. The latter presses upon a guide 19 into which is threaded an extension 8| Kfrom an operating stem 83. The operating end .of the stem is ,located behind a flexible liquid- :tight diaphragm, preferably a snap-acting spring Adisc 8.5. The margin of this disc is held and sealed in a groove 81 within an ,enlarged recess ..89 formed in the side of the body 1l at the outer .end Yof passage 13 opposite plug 1.5. Between the extension .8| and the stem 83 is a conical cam 9i;

Qrosswseof the passage 13 and extending vervtically and axially through body 1| is a fluid pas,-

sage .931at the ;lowerend ofl which is a valve seat l95. YA'Valve .91 havin-gra vertically elongate transverse aperture 1,99 .therethrough receiving extension 8l is axially movable in passage 93. This valve -is normally biased against valve seat 95 by means o fa` compression spring l0! backed up lby a plug or .Spring seat 103 in which is a feed .opening 1.05.

`Filling ofthe .brush iseiected by inverting the reservoir cylinder 4i -loading it with ink, and then threading onto `it .the rbody 1l while the latter is inverted. Then when .the brush is turned upright, the `parts are as .shown in Fig. 2. The arrangement is such that `by pressing upon the disc :85, -its snap action forces in the operatingstem 83 and causesthe `cam 9i to raise the valve 91 -against the bias ofv .spring 19|, thereby to open the valve to `allow ink to ow to the brush. Ink

enters vthrough :the opening |05 andthe valve 91 is floose enough in its passage A-93 to `pass ink aroundit.*S'Thesprings 11 :and 'lill-l return Vthe,

partstoiithe-closed position when pressure is released from -the snap-acting disc 85. Disc then springs back fto'the'position ushown -n Fig. 1.

Leakageof ink around operating stem 83 to the outsideA of the body '1 I is positively prevented by "the lseal Abetween spring disc `85 and the b0dy'1l. No'packing is necessary around stem `83 yto prevent leakage of ink, consequently stem 83 may be made freely slidable within cross passage 13 so as to provide for an improved operating touch. Not only does the invention provide for better touch by free action of the stem 83 without leakage around it, but it provides for snap action by means of the disc 85, and thus provides a tactual signal that the valve has been operated to the proper extent.

It will be understood that valve 91, instead of having a loose t in passage 93, may have a tighter t therein and be vertically splined to form passages for ink flow. It will also be understood that the snap-acting disc B5 is generally made of spring metal, but other material such as plastic, rubber, or the like, may be used.

In view of the above, it will be seen that the several objects of the invention are achieved and other advantageous results attained.

As many changes could be made in the above constructions without departing from the scope of the invention, it is intended that al1 matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

We claim:

1. A fountain brush comprising a body having a brush at one end and detachably fitted with an elongate reservoir forming ahandle at its other end, said body having a fluid passage therethrough from its reservoir end to its brush end and a lateral passage therethrough from one side to the other intersecting said uid passage, a valvev seat at the brush end-"of the fluid passage and a spring seat at the reservoir end of said fluid passage, the spring seat having an opening for flow of fluid from the reservoir into the uid passage, saidv body being vformed with an enlarged recess at the outer end of the lateral passage at one side o f the iiuid passage, a valve slidable in the uid passage toward and away from the valve seat between a closed' position wherein one end of the valve engagesv the valve seat and an open position where said one end of the valve is away fromfthe valve seat, a spring located in the fluid passage between the other end of the valve and the spring'seat at the reservoir end of the fluid passage biasing the valve to closed position, said valve being of such length vas to intersect saidlate'ral passage in either open r closed position, and being of such cross-section as to allow flow of iiuid around the valve when open, an operating stem slidable in the lateral passage on the side of the fluid passage toward said recess, said stem having a tapered cam portion at its inner end and a reduced extension which reaches from the smaller end of the tapered cam portion loosely through a transverse cam-receiving aperture in theV valve, a guide on the end of said extension slidable in the lateral passage on the other side ofthe uid passage, a spring in the lateral passage reacting against the guide from a plug closing thelateral passage and biasing the operating stem to a released position projecting out into said recess, and a snap-acting spring disc located in said vrecess-covering and engaging the outer end of the-operating stemand having its margin sealed in a groove around said recess. ,Y 1 y 2. A fountain brush `comprisinga body having a brush at one end and detachably fitted with an elongate reservoir forming a handle at its other end, said body having a uid passage therethrough from its reservoir end to its brush end 4 and a lateral passage therethrough from one side to the other intersecting said fluid passage, a Valve seat at one end of the fluid passage and a spring seat at the other end of said uid passage, the spring seat having an opening for iiow of fluid, said body being formed with an enlarged recess at the outer end of the lateral passage at one side of the uid passage, a Valve slidable in the fluid passage toward and away from the valve seat between a closed position wherein one end of the valve engages the valve seat and an open position where said one end of the valve is away from the valve seat, a spring located in the fluid passage between the other end of the valve and the spring seat at the said other end of the iiuid passage biasing the Valve to closed position. said valve being of such length as to intersect said lateral passage in either open or closed position, and being of such cross-section as to allow iiow of fluid around the valve when open, an operating stem slidable in the lateral passage on the Side of the iluid passage toward said recess, said stem having a tapered cam portieri at its inner end and a reduced extension which reaches from the smaller end of the tapered cam portion loosely through a transverse cam-receiving aperture in the valve, a guide on the end of said extension slidable in thev lateral passage on the other side of the fluid passage, a spring in the lateral passage reacting against the guide from a plug closing the lateral vpassageand biasing the operating stem to a released position projecting out into said recess, and a snap-acting spring disc located in said recess covering and engaging the outer end of the'operating stem and having its margin; sealed in a groove around said recess.

MERRITT w. MAGANN. WILLIAM A. MCELVAIN. REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS German'y v i vv June 23, 1920 

